TY - JOUR
T1 - Crosslinking of branched PIM-1 and PIM-Py membranes for recovery of toluene from dimethyl sulfoxide by pervaporation
AU - Aloraini, Sulaiman
AU - Mathias, Michael
AU - Crone, Jessica
AU - Bryce, Kurtis
AU - Yu, Ming
AU - Kirk, Richard A.
AU - Ahmad, Mohd Zamidi
AU - Asuquo, Edidiong
AU - Rico-Martínez, Sandra
AU - Volkov, Alexey V.
AU - Foster, Andrew
AU - Budd, Peter
PY - 2023/1/17
Y1 - 2023/1/17
N2 - Branched forms of the archetypal polymer of intrinsic microporosity PIM-1 and the pyridinecarbonitrile-containing PIM-Py may be crosslinked under ambient conditions by palladium (II) acetate. Branched PIM-1 can arise in polymerizations of 5,5',6,6'-tetrahydroxy-3,3,3',3'-tetramethyl-1,1'-spirobisindane with tetrafluoroterephthalonitrile conducted at high set temperature (160 ºC) under conditions, such as high dilution, that lead to a lower temperature profile over the course of the reaction. Membranes of PIM-1 and PIM-Py crosslinked with palladium acetate are sufficiently stable in organic solvents for use in the recovery of toluene from its mixture with dimethyl sulfoxide by pervaporation at 65ºC. With both PIM-1 and PIM-Py membranes, pervaporation gives high toluene/DMSO separation factors (around 10 with a 77 vol% toluene feed). Detailed analysis shows that the membranes themselves are slightly selective for DMSO and it is the high driving force for toluene evaporation that drives the separation.
AB - Branched forms of the archetypal polymer of intrinsic microporosity PIM-1 and the pyridinecarbonitrile-containing PIM-Py may be crosslinked under ambient conditions by palladium (II) acetate. Branched PIM-1 can arise in polymerizations of 5,5',6,6'-tetrahydroxy-3,3,3',3'-tetramethyl-1,1'-spirobisindane with tetrafluoroterephthalonitrile conducted at high set temperature (160 ºC) under conditions, such as high dilution, that lead to a lower temperature profile over the course of the reaction. Membranes of PIM-1 and PIM-Py crosslinked with palladium acetate are sufficiently stable in organic solvents for use in the recovery of toluene from its mixture with dimethyl sulfoxide by pervaporation at 65ºC. With both PIM-1 and PIM-Py membranes, pervaporation gives high toluene/DMSO separation factors (around 10 with a 77 vol% toluene feed). Detailed analysis shows that the membranes themselves are slightly selective for DMSO and it is the high driving force for toluene evaporation that drives the separation.
KW - Polymer of intrinsic microporosity
KW - crosslinking
KW - pervaporation
KW - organic-organic separation
KW - branched PIMs
M3 - Article
SN - 2637-6105
VL - 5
SP - 1145
EP - 1158
JO - ACS Applied Polymer Materials
JF - ACS Applied Polymer Materials
IS - 2
M1 - https://doi.org/10.1021/acsapm.2c01600
ER -